From: Dave Martin Dave.Martin@arm.com
This patch has been added to the stable tree. If you have any objections, please let us know.
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[ Upstream commit d3805c546b275c8cc7d40f759d029ae92c7175f2 ]
Ensure that if userspace supplies insufficient data to PTRACE_SETREGSET to fill all the registers, the thread's old registers are preserved.
Signed-off-by: Dave Martin Dave.Martin@arm.com Acked-by: David S. Miller davem@davemloft.net Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- arch/sparc/kernel/ptrace_64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c index 9ddc4928a089..c1566170964f 100644 --- a/arch/sparc/kernel/ptrace_64.c +++ b/arch/sparc/kernel/ptrace_64.c @@ -311,7 +311,7 @@ static int genregs64_set(struct task_struct *target, }
if (!ret) { - unsigned long y; + unsigned long y = regs->y;
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &y,